If I then issue the command and arguments as indicated in the following StackOverflow post (ProcessBuilder adds extra quotes to command line) as a String [] array it fails, as the spaces in the directory paths break the arguments somehow to the CCBU.exe executable :

The issue is, the users of this process will be placing files in folders (directories) that DO have spaces. So somehow I have to get it working with spaces. I'm thinking it's something simple, but what am I missing?